Home / 1,138,621.12-1,571,240.64-629,310.40

Finding the Fourth Proportional to 1,138,621.12, 1,571,240.64 and 629,310.40

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Solution

The fourth proportional to 1,138,621.12, 1,571,240.64 and 629,310.40 is: 868,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,621.12 : 1,571,240.64 = 629,310.40 : x
  2. Step 2: Convert to fraction form
    1,138,621.12/1,571,240.64 = 629,310.40/x
  3. Step 3: Cross multiply
    1,138,621.12x = 1,571,240.64 × 629,310.40
  4. Step 4: Simplify right side
    1,138,621.12x = 988,798,075,654.66
  5. Step 5: Solve for x
    x = 988,798,075,654.66/1,138,621.12
  6. Step 6: Final answer
    x = 868,417.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.